Optional expiration time, either relative number of seconds
from current time (up to 1 month), or an absolute Unix epoch time.
By default, items never expire, though items may be evicted due to
memory pressure. Float values will be rounded up to the nearest
whole second.
key_prefix
Prefix for to prepend to all keys.
min_compress_len
Unimplemented compatibility option.
namespace
a string specifying an optional namespace to use in
the request.
Returns
A list of keys whose values were NOT set because they already existed
in memcache. On total success, this list should be empty.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2023-11-14 UTC."],[[["The `replace_multi` function in `google.appengine.api.memcache` is used to replace the values of multiple keys in memcache."],["It takes a dictionary (`mapping`) where keys map to their new values, and it will only proceed if the key was already present in the memcache."],["The function accepts optional parameters like `time` for setting an expiration time, `key_prefix` for adding a prefix to all keys, and `namespace` for specifying a namespace."],["It returns a list of keys for which the values were not replaced because they did not exist in the memcache."],["If all replacements are successful, the returned list will be empty, indicating that every key within the mapping were already in memcache."]]],[]]
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